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How long does it take Loctite to dry?

aadams1278

Senior Heliman

Wilson, NC - USA

i've been dropping out my clutch bell a lot lately, (changing the pinion and liner etc.) and noticed that the setscrews that hold the start coupling in place have been flinging the loctite out.

i've been putting the screws in and packing up and going to fly shortly thereafter. i thought it was still holding but just being flung out a little, but today i found that the screws had actually backed out a little bit and the start coupler was loose.

this is blue loctite. does anybody know how long it takes to dry or set up?

07-07-2009 Over year old.
MHC

Senior Heliman

Willis, Tx.

To get the best results probably overnight.

07-07-2009 Over year old.
asm

Veteran

California

Depends on brand and loctite. In general, 24 hours to full strength. Loctite do have some that will cure in 2 hours. They also sell special promotor to shorten the curing time.

But the "blue loctite" isn't very specific, there are at least a few different variation if not more that also uses blue dye.

B

07-07-2009 Over year old.
aadams1278

Senior Heliman

Wilson, NC - USA

wow, those are definitely the quickest responses i've ever gotten on RR!

this is the el cheapo kind from the LHS. it just says "liquid thread lock" and the whole rest of the package is in japanese or chinese, or something else i don't understand.

that's a real downer though, needing to wait 24 hours after making a simple bolt-on repair before flying again.

07-07-2009 Over year old.
fenderstrat

rrProfessor

Aston,Pa

overnight should be fine,yes full strength is about 24 hours,but within 6-8 hours its usually good to go.if you let loctite cure overnite and you still have stuff working loose,you have other issues

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07-07-2009 Over year old.
Yug

rrMaster

UK. Herts

I allways leave loctite (Blue, Green or Red) to cure overnight. If you are impatient to fly after building, there is a strong likelihood your loctite won't be doing anything

Vegetable rights and Peace

07-07-2009 Over year old.
airdodger

Elite Veteran

Johnston USA

They sell a primer that speeds it up a lot. Go to their site.

Chris

07-07-2009 Over year old.
TaleGunner

Elite Veteran

Deer Park WA

here is the data sheet with a graph for cure times on blue 242
http://65.213.72.112/tds5/docs/242-EN.PDF

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

07-07-2009 Over year old.
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LaurenceGough

Elite Veteran

Reading, UK

24 hours I would let important bolts sit. 12 hours min for important ones.

Some take a chance at 15 minutes or less, not recommended at all from me.

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07-07-2009 Over year old.
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aadams1278

Senior Heliman

Wilson, NC - USA

looks like i wasn't doing it right then.

oh well, you live and you learn.

at least it wasn't something that brought the heli to the ground before i planned for it to get there!

07-07-2009 Over year old.
FlaG8r

Elite Veteran

Florida

Wait a while on blue and red, green is almost instant. Depends what you're loctiting really. I would wait overnight for something like your spindle bolts...for some frame hardware, I'd loctite it and fly.

Don't forget to really clean the bolt with alcohol first.

Life is tough, it's tougher if you're stupid

07-07-2009 Over year old.
chopper_crazy

Elite Veteran

Delphos, Ohio

I use blue locktite and I have noticed that the liquid stuff dries quickly whereas the gel locktite takes about 24 hours or so.

It's a complex, costly, glow powered anti-gravity machine!

07-07-2009 Over year old.
B.T.D.T.

Elite Veteran

NY

I've seen some RC cars guys torch the screw with locktight until dry and then install the screw. On the 1 to 1 cars when I replaced the front rotor the screw that came with the kit has dried locktight on the screw for me to screw in.

07-07-2009 Over year old.
HOMEPAGE  
zaw

Key Veteran

Lebanon, NH - USA

thread lockers doesn't work good on Stainless.

ಠ_ಠ HBK2 built with inexpensive parts! ٩๏̯͡๏)۶ Gaui425

07-07-2009 Over year old.
holzback

Key Veteran

noblesville IN United States

depends on how much is used

you aint crashin you aint learnin

07-07-2009 Over year old.
David Blain

Key Veteran

Mt. Dora, Florida (USA)

A good loctite test is if the bolt shears "but" doesn't back off!
Right aadams1278?
At least the threads stayed in tight

David Blain
T.O.R.C.H.S. Orlando Member

07-07-2009 Over year old.
aadams1278

Senior Heliman

Wilson, NC - USA

that's very true!

i think in the case of the start shaft, it's just a part that spins in a way that can sling the loctite out of the threads.

i say that because i loctited the clutch bolts at the same time as the start coupler bolts.

07-07-2009 Over year old.
30636086

Key Veteran

Tacoma, WA

i say that because i loctited the clutch bolts at the same time as the start coupler bolts.
Are you cleaning them good? and letting the loctite dry long enought?
Cause that was my mistake; not cleaning good enough before using the loctite.

I dont suffer from mental iIlness, I actually enjoy mine!

07-07-2009 Over year old.
asm

Veteran

California

Wait a while on blue and red, green is almost instant. Depends what you're loctiting really. I would wait overnight for something like your spindle bolts...for some frame hardware, I'd loctite it and fly.
That's not always true. There are at least three type of green, if not more. 638, 641, 680. I know 680 will require overnight to dry. So, going by color of the loctite is probably the worse way to ID them.

B

07-08-2009 Over year old.
asm

Veteran

California

thread lockers doesn't work good on Stainless.
Never heard of that before, I believe as long as one of the mating surface contain metal that will activated the curing process, loctite will cure.

On the note of SS, it's probably not a good idea to use SS on load bearing part as they often (not always) weaker then the normal grade 8 fastener.

B

07-08-2009 Over year old.
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How long does it take Loctite to dry?

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